Optical and Electrical Properties of Lead Sulphide (PBS) Nanoparticle Embedded Polyvinyl Alcohol PVA Nanocomposites for Flexible Electronic Device
Lead sulphide-polyvinyl alcohol (PbS-PVA) nanocomposites have been grown by a chemical bath deposition
process at different growth temperature. The plane view transmission electron micrographs clearly indicate the formation of
PbS nanoparticles encapsulated in PVA matrix. Selected area electron diffraction (SAED) patterns show that the formation
of polycrystalline nature of PbS nanoparticles. The enhancement of energy band gap is attributed to the quantum
confinement effect in PbS nanocrystals. The current-voltage characteristics of PbS-PVA nanocomposite films on patterned
indium tin oxide (ITO) coated flexible polyethylene terephthalate (PET) substrates with Aluminium (Al) and Silver (Ag) as
top contact electrodes have been studied at different growth temperature 60, 80 and 1000C. The flexibility studies of
ITO/PbS-PVA/Al and ITO/PbS-PVA/Ag devices have been performed at different bending angles for possible applications
in flexible electronic devices.
Index Terms - PbS-PVA nanocomposite, Schottky diode, Curren-Voltage, Fexible electronic Device.